/**
 * Copyright 2010 Nicholas Blair, Eric Dalquist
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.googlecode.ecache.annotations;

import java.lang.reflect.Method;

/**
 * This interface provides operations to determine if methods/classes
 * have {@link CacheableAttribute} or {@link TriggersRemoveAttribute}
 * information.
 * 
 * @author Eric Dalquist
 * @version $Revision: 105 $
 */
public interface CacheAttributeSource {
    /**
     * Determines if the method has should be cached or involved with cache entry removal. Returns {@link AdviceType#NONE} if the
     * method doesn't participate with either. 
     * 
     * @param method The method to inspect
     * @param targetClass The class the method exists on
     * @return The type of advice on the method, {@link AdviceType#NONE} if the method is not advised. Will never return null.
     */
    public AdviceType getAdviceType(Method method, Class<?> targetClass);
    
    /**
     * Gets the runtime triggers-remove information for a method. If the method is not eligible for
     * triggers-remove null is returned. 
     * 
     * @param method The method to inspect
     * @param targetClass The class the method exists on
     * @return Runtime triggers-remove configuration for the method, null if the method is not involved with triggers-remove.
     */
    public TriggersRemoveAttribute getTriggersRemoveAttribute(Method method, Class<?> targetClass);
    
    /**
     * Gets the runtime caching information for a method. If the method is not eligible for
     * caching null is returned. 
     * 
     * @param method The method to inspect
     * @param targetClass The class the method exists on
     * @return Runtime caching configuration for the method, null if the method is not cachable.
     */
    public CacheableAttribute getCacheableAttribute(Method method, Class<?> targetClass);
}
